Nortel DMS-100 Manual page 99

2-52 System level recovery procedures
Recovering a composite clock
8
9
10
11
12
13
297-8021-545 Standard 14.02 May 2001
(continued)
LIS 1
FBus0: InSv
FBus1: ManB
Note: In the example, B indicates that the F-bus is manual busy or that the
controlling LIM unit is system busy or manual busy, a dot (.) indicates an
in-service tap, M indicates a manual-busy tap, I indicates an in-service
trouble tap, S indicates a system-busy tap, and a dash (-) indicates an
unequipped tap.
Repeat step 7 for the remaining two LISs.
Determine if either F-bus is in ISTb state.
If either F-bus is
in ISTb state,
anything else
Contact the personnel responsible for maintaining the timing signal generator
(TSG) and determine if the TSG is working.
If the TSG is
working
not working
Wait until the personnel responsible for maintaining the TSG returns it to
service.
Determine if the HLIU that is in ISTb state due to the composite clock failure
is also in ManB, or OffL state, and if it requires recovery.
If HLIU
is in OffL state and requires re-
covery,
is in ManB state and requires re-
covery,
does not require recovery,
Note: When the composite clock is down, the HLIU goes into ISTb state.
The HLIU in ISTb state returns to in-service state when the composite
clock is recovered. Do not attempt to recover the HLIU with the RTS
command. Use step 12, 13 and 14 to return a stuck HLIU to service,
Manually busy the HLIU that is in OffL state by typing
>BUSY hliu_no
where
Tap: 0 4 8
II.. . ..II
–– –
BBBB B BBBB
–– –
Do
step 10
step 16
Do
step 15
step 11
Do
step 13
step 14
step 15